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回复 1# mordorwww
Historically the most common Transport Layer protocol for network logging has been User Datagram Protocol (UDP), with the server listening on port 514. As UDP lacks congestion control mechanisms, support for Transport Layer Security is required to implement and also recommended for general use[7] on Transmission Control Protocol port 6514.[8]
One such transport is defined in [RFC5426] and is
consistent with the traditional UDP transport. This transport is
needed to maintain interoperability as the UDP transport has
historically been used for the transmission of syslog messages.
总结来说,历史原因。 |
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